PLASMA LENS FINE FOCUSING OF HEAVY-ION BEAMS

被引：46

作者：

BOGGASCH, E

TAUSCHWITZ, A

WAHL, H

DIETRICH, KG

HOFFMANN, DHH

LAUX, W

STETTER, M

TKOTZ, R

机构：

[1] GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT,GERMANY

[2] UNIV ERLANGEN NURNBERG,INST PHYS,W-8520 ERLANGEN,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1992年 / 60卷 / 20期

关键词：

D O I：

10.1063/1.107443

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The fine-focusing capability of a current-carrying, "active" plasma lens has been demonstrated for the first time. A cylindrically symmetric argon discharge plasma pulsed with an oscillating current of over 20 kA in amplitude served as a current conducting medium. With this plasma lens the diameter of an incident 2.2-GeV gold ion beam from the linear accelerator UNILAC at GSI-Darmstadt was focused from initially 10 to about 0.25 mm, at a focal length of only 140 mm. The gradient of the azimuthal magnetic field exceeded 120 T/m. The striking features of this first-order and strong-focusing plasma lens favor its use as a precise high-gradient focusing device for high-energy charged particles.

引用

页码：2475 / 2477

页数：3

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